Yes we will have to do so as its purely down to personal preference . I first came across oil/water emulsifying when i ran a 911 through winter . Alarmed when routinely checking the oil to find a gunk / mayo deposit that is directly caused with short journeys in cold temps producing condensation . just one example of thousands here if you think i'm just armchair dreaming http://www.911uk.com/viewtopic.php?p=617445derin100 wrote: ↑Sun Dec 17, 2017 12:38 pm So, just let me get this clear....?
This mysterious water that creeps into and actually mixes with your engine oil over winter (I wasn't aware that water and oil mix), what happens to it to this particular form of water as soon as the engine temperature exceeds 100 C ?
Or, does this mysterious old water then leave some form of 'poison' that then affects the protective properties of your oil?
I'm further confused as to why then this mysterious water or its residue should be hazardous to M- Engines on a 12 monthly basis yet seemingly OK for all other BMW engines only if left for 2 years (according to their servicing schedule) regardless of mileage incurred...
At best this all just sounds like armchair theorising to me; more logically it just sounds like a waste of time and money for the sake of it.
I repeat, I have never experienced a problem on any BMW which can be attributed to not adhering to a prescribed element of the service schedule on a time only basis.
I guess we're going to have to agree to disagree on this.
Just for clarity though , i wasn't singling out M engines specifically Re the oil changes I do yearly servicing regardless of miles whether its my diesel van or petrol performance car